You can get similar results with a folded dipole half wave and a ground plane system - that will also have gain on low-angle signals. It will provide gain compared with a dipole, but at the expense of radiation angle - you won't hear high aircraft as well, if at all. The advantage of a colinear is that it can be other than a half wavelength - but construction is complex, so you have to buy commercially or be very good at precision building and testing/calibration. Available from Maplin for aboutįishhead A basic colinear is a form of vertical dipole (look at it!). Often a simple way to improve an airband receiver is to swap the inefficient rubber duck for a quarter wave length telescopic antenna.
If you buy a good antenna, buy good quality cable to connect it! There is no point loosing all the antenna gain in the cable. The folllowing companies have a good selection of dedicated airband antennas. Colinears have more gain at right angles to the antenna but the gain is reduced off the end of the antenna (vertically above it) Outdoor antennas are the only answer to good coverage, vertical diapoles are not recommended as they interact with vertical poles and supports, a groundplane, or colinear design is much better. "Desctop" implies indoor with very limited range!
There is nothing magic about antennas "Skyscan" implies a broadband scanner antenna: a jack of all trades but master of none! If you only intend to use airband don't buy a multi-frequency antenna.
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